Audible fire alarm apparatus

Claim 1

An audible alarm apparatus comprising: fire sensing means, including a fire sensor for detecting a fire outbreak and a switching means responsive to a signal detected from said fire sensor for outputting the signal when the voltage level of the signal is more than a predetermined amount, location setting portion for setting a location in which said fire sensing means is positioned and outputting an information data for a location in which a fire is generated, system controller responsive to the signal outputted from said switching means for determining the fire outbreak, for providing information data about the location of the fire outbreak being set in the location setting means to an input and output controlling portion, and controlling interface devices when the fire outbreak location has been received via said input and output controlling portion, DTMF generator for converting the fire outbreak data outputted from said system controller and its associated location information data to dial tone frequency signal and for providing the dial tone frequency signal to telephone line connecting portion, DTMF receiver for receiving the dial tone frequency signal associated with the fire outbreak data and its associated location information data via said telephone line connecting portion, voice data storage portion responsive to the information data outputted from said system controller for providing a voice data written in specified address area, parallel to serial converter for converting parallel data which is read from said voice data storage portion and voice-synthesized in the system controller, to serial data, and for providing the serial data to D/A converter, digital to analog converter for converting digital data outputted from said parallel to serial converter to analog signal and for providing the analog signal to an amplifier, and amplifier for providing to speaker voice signal after noise is eliminated.